#004CA0
Closest named color: Cobalt (#1E488F). oklch(43% 0.151 256.7), rgb(0, 76, 160).
Aa
White text reads best on this color (8.26:1).
About this color
#004CA0 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.151 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.030 away. White text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #004CA0 |
| RGB | rgb(0, 76, 160) |
| HSL | hsl(212, 100%, 31%) |
| OKLCH | oklch(43% 0.151 256.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #004CA0 | 8.26:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #004CA0 | 2.54:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #004CA0 text on white | 8.26:1 | AAA | Lc 87.8 | Fine for body text |
| #004CA0 text on black | 2.54:1 | Fails | Lc -14.4 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9CC3FA
oklch(80.9% 0.089 257)
-
Step 400
400
#64A2F7
oklch(70.8% 0.141 256.6)
-
Step 500
500
#3587F4
oklch(63% 0.181 257)
-
Step 600
600
#006EE2
oklch(55.6% 0.196 256.8)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800 (this color)
#004CA0
oklch(43% 0.151 256.7)
-
Step 900
900
#0E407E
oklch(37.7% 0.117 256.5)
-
Step 950
950
#0B264A
oklch(27.1% 0.074 256.8)
#004CA0 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0D55A3 | 0.027 |
| Deuteranopia (no green cones) | #00489E | 0.011 |
| Tritanopia (no blue cones) | #00616E | 0.114 |
| Achromatopsia (no color) | #4E4E4E | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004CA0
#004CA0
oklch(43% 0.151 256.7)
- #6B4800
#6B4800
oklch(43% 0.09 77)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #004CA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.030
- Dusk Blue #26538D ΔE 0.045
- Light Navy #155084 ΔE 0.050
- Sapphire #2138AB ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.058
- Blueberry #464196 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.066
- Light Navy Blue #2E5A88 ΔE 0.068
Use #004CA0 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.